Q50 (shown above):The Q50 replaces the outgoing G37 sports sedan and wears all-new sheetmetal. Power is from either Infiniti's familiar 328-hp, 3.7-liter V-6 or a new hybrid system. Each is mated to a seven-speed automatic. Word is that a Mercedes-designed turbocharged four-cylinder may appear soon.

Q60: Infiniti's carry-over G coupe (there will be an IPL version!) and convertible now share this alphanumeric.

Q70: The current M37 and M56 sedans will be grouped together under this moniker, the engine displacement called out by secondary badges.